The main interactivity element involves transforming one congruent triangle to match the other, with the goal of "necromancing" a shattered insect made of triangles — "back to life".
Students apply transformations by utilizing operator methodology. Press each corresponding button to either mirror, rotate, translate, or scale the currently glowing triangle. Use the right combination of transforms for it to perfectly match the black triangle. The video tutorial example shows how each sample triangle is transformed using each operator.
When an operator on paper is pressed, a screen overlay version of this operator appears. Both the screen-overlay and on-paper versions allow for changing the operation parameters - such as rotation degrees, mirror negation factors, translation coordinates, and dilation scale. Here are the allowed operation parameters:
[Under Development] Pythagorean triangles transformations sub-module.
If the above video does not display, please use this Non-Youtube Download Link Here.
Last updated: May 5, 2015
These modules are designed to be used in conjunction with existing course activities. Please see the Resources section for Lesson Plan ideas. See the Congruence Necromancer Resource here.